Solar Panel Voc-MPPT?
Wondering if there is any relationship between measured Voc and MPPT performance with a 24v panel. My 12v panel has a Voc rating of 21.9 and Isc of 8.2, but I often see 8.2ish when Voc is only 20....
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Took the panel outside for another Voc , Isc test. At high noon very blue sky. (but sun low this time of year)
got 37.2v right away,(rated 36.8) which dropped fast to 36.1. The glass warmed up fast could feel it got warm. So that is the temperature effect on Voc for sure IMO.
I got 7.84 Isc, which stayed there, which is lower than rated 8.34. Either low sun too low or some haze not showing in the blue? did get 8.1 a few days ago, so must be haze.
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I don't need no steenkin watts.
With a panel this colour I should get all the amps I ever need!
got 37.2v right away,(rated 36.8) which dropped fast to 36.1. The glass warmed up fast could feel it got warm. So that is the temperature effect on Voc for sure IMO.
I got 7.84 Isc, which stayed there, which is lower than rated 8.34. Either low sun too low or some haze not showing in the blue? did get 8.1 a few days ago, so must be haze.
---------
I don't need no steenkin watts.
With a panel this colour I should get all the amps I ever need!
